"What if Lily has a date?" Sirius was just saying, it didn't seem that unlikely. "I'll be there for moral support." And to prank the date in question, should it become necessary. Not the first time. He knew what it meant to be friends with James. "Yeah, I'm solo. I got some offers."

But, eh. He tended to have more fun solo. "Maybe Wormtail has a date. Why wouldn't Moony come?"